Speaker



FIG. 1 is a front, right side, perspective view of a speaker, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and

FIG. 7 is a bottom view thereof; and,

FIG. 8 is an enlarged view of the encircled portion 8 in FIG. 2.

The evenly-dashed broken lines depict portions of the speaker that form no part of the claimed design. The long dash-dot lines showing enlargements form no part of the claimed design. 

CLAIM The ornamental design for a speaker, as shown and described. 